| 摘要 |
PURPOSE: An electric jack is provided to improve durability and lift a vehicle with a low-powered motor using a screw-clamping manner. CONSTITUTION: An electric jack comprises an outer unit(130), an inner member, and a motor(120). The outer unit has a hollow structure. The inner member is located inside the outer unit, and the outer circumference thereof is coupled with the inner circumference of the outer unit. The motor rotates the outer unit. The inner member comprises an inner unit and a post(150). The inner unit has a hollow structure. The post is located inside the inner unit. |
